一、控制污染的重要性液压挖掘机液压系统的清洁状况、液压油的污染程度是影响整机可靠性和耐久性的重要因素。据调查,液压系统的故障中约有70%与液压油使用不当有关。而液压油造成的故障中约有90%是油中混入异物所致。这个结论可通过试验来验证。用相当于工作油重量0.005%的细砂,分三次投入工作油中。结果发现,油泵仅运转50小时,磨损量相当于无灰尘运转1000小时以上。运转时间与污染度的关系见图1。 First, the importance of pollution control Hydraulic excavator hydraulic system cleanliness, hydraulic oil pollution level is the impact of machine reliability and durability of the important factors. According to the survey, hydraulic system failure of about 70% and improper use of hydraulic oil. About 90% of the hydraulic system caused by oil contamination is foreign matter. This conclusion can be verified through experiments. With the equivalent of 0.005% by weight of the working oil fine sand, divided into three working oil. The results showed that the pump is only running for 50 hours, the amount of wear equivalent to dust-free operation of more than 1,000 hours. Running time and the relationship between pollution degree shown in Figure 1.